trusty (3) lrange.3tcl.gz

NAME

       lrange - Return one or more adjacent elements from a list

SYNOPSIS

       lrange list first last
_________________________________________________________________

DESCRIPTION

       List  must be a valid Tcl list.  This command will return a new list consisting of elements first through
       last, inclusive.  First or last may be end (or any abbreviation of it) to refer to the  last  element  of
       the  list.   If  first  is  less than zero, it is treated as if it were zero.  If last is greater than or
       equal to the number of elements in the list, then it is treated as if it were end.  If first  is  greater
       than  last  then  an empty string is returned.  Note: ``lrange list first first'' does not always produce
       the same result as ``lindex list first'' (although it often does for simple fields that  aren't  enclosed
       in braces); it does, however, produce exactly the same results as ``list [lindex list first]''

EXAMPLES

       Selecting the first two elements:
              % lrange {a b c d e} 0 1
              a b

       Selecting the last three elements:
              % lrange {a b c d e} end-2 end
              c d e

       Selecting everything except the first and last element:
              % lrange {a b c d e} 1 end-1
              b c d

       Selecting a single element with lrange is not the same as doing so with lindex:
              % set var {some {elements to} select}
              some {elements to} select
              % lindex $var 1
              elements to
              % lrange $var 1 1
              {elements to}

SEE ALSO

       list(3tcl),   lappend(3tcl),   lindex(3tcl),  linsert(3tcl),  llength(3tcl),  lsearch(3tcl),  lset(3tcl), │
       lreplace(3tcl), lsort(3tcl)

KEYWORDS

       element, list, range, sublist